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针对通用串行总线(USB)的安全隐患,提出了USB接口的安全策略,包括主机与设备之间身份双向认证、总线传输安全、数据存储安全等基本功能.给出了一种主机与设备之间双向认证及密钥协商协议,提出了一种密码安全USB设备控制器的系统设计方案,并在现场可编程门阵列(FPGA)上对该方案进行了IP核验证.实验结果表明,该方案能够满足预期的安全功能需求,可为实际的系统开发提供芯片级安全保护.
Aiming at the potential safety hazard of Universal Serial Bus (USB), this paper proposes the security strategy of USB interface, including the basic functions of identity authentication, bus transmission security and data storage security between the host and the device. A two-way mutual authentication and key agreement protocol, a system design scheme of a secure USB device controller is proposed and the IP core is verified on a field programmable gate array (FPGA) .Experimental results show that this scheme To meet the anticipated safety functional requirements, it provides chip-level security for practical system development.